This is a recap of the top 10 posts on Hacker News on Dec 18, 2025.

Feel free to leave feedback on Github: https://github.com/denolfe/hacker-news-highlights

• (00:00) - Intro

Gemini 3 Flash: Frontier intelligence built for speed
https://blog.google/products/gemini/gemini-3-flash/
https://news.ycombinator.com/item?id=46301851

AWS CEO says replacing junior devs with AI is 'one of the dumbest ideas'
https://www.finalroundai.com/blog/aws-ceo-ai-cannot-replace-junior-developers
https://news.ycombinator.com/item?id=46302267

Tell HN: HN was down
https://news.ycombinator.com/item?id=46301921

Coursera to combine with Udemy
https://investor.coursera.com/news/news-details/2025/Coursera-to-Combine-with-Udemy-to-Empower-the-Global-Workforce-with-Skills-for-the-AI-Era/default.aspx
https://news.ycombinator.com/item?id=46301346

Gut bacteria from amphibians and reptiles achieve tumor elimination in mice
https://www.jaist.ac.jp/english/whatsnew/press/2025/12/17-1.html
https://news.ycombinator.com/item?id=46306894

I got hacked: My Hetzner server started mining Monero
https://blog.jakesaunders.dev/my-server-started-mining-monero-this-morning/
https://news.ycombinator.com/item?id=46305585

A Safer Container Ecosystem with Docker: Free Docker Hardened Images
https://www.docker.com/blog/docker-hardened-images-for-every-developer/
https://news.ycombinator.com/item?id=46302337

How SQLite is tested
https://sqlite.org/testing.html
https://news.ycombinator.com/item?id=46303277

OBS Studio Gets a New Renderer
https://obsproject.com/blog/obs-studio-gets-a-new-renderer
https://news.ycombinator.com/item?id=46305428

Ask HN: Those making $500/month on side projects in 2025 – Show and tell
https://news.ycombinator.com/item?id=46307973